Wall hook



FIG. 1 is a top perspective view of a wall hook showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view taken from the right of FIG. 2, the side opposite being a mirror image thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a wall hook, as shown. 